/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:03:06,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:03:06,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:03:06,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:03:06,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:03:06,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:03:06,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:03:06,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:03:06,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:03:06,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:03:06,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:03:06,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:03:06,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:03:06,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:03:06,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:03:06,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:03:06,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:03:06,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:03:06,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:03:06,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:03:06,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:03:06,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:03:06,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:03:06,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:03:06,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 10:03:06,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:03:06,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:03:06,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:03:06,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2021-03-24 10:03:06,608 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:03:06,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:03:06,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:03:06,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:03:06,612 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:03:06,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:03:06,612 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:03:06,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:03:06,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:03:06,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:03:06,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:03:06,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:03:06,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:03:06,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:03:06,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:03:06,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:03:06,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:03:06,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:03:06,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:03:06,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:03:06,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:03:06,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:03:06,948 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:03:06,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-24 10:03:07,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de0ae37e3/d53dd90c0acc4b9a9782e66214ef5b24/FLAGc50e34815 [2021-03-24 10:03:07,473 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:03:07,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i [2021-03-24 10:03:07,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de0ae37e3/d53dd90c0acc4b9a9782e66214ef5b24/FLAGc50e34815 [2021-03-24 10:03:07,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de0ae37e3/d53dd90c0acc4b9a9782e66214ef5b24 [2021-03-24 10:03:07,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:03:07,502 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:03:07,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:03:07,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:03:07,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:03:07,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:07,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731867d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07, skipping insertion in model container [2021-03-24 10:03:07,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:07,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:03:07,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:03:07,769 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-24 10:03:07,804 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-24 10:03:07,810 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:03:07,821 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:03:07,859 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30382,30395] [2021-03-24 10:03:07,861 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/23_lu-fig2.fixed.i[30752,30765] [2021-03-24 10:03:07,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:03:07,939 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:03:07,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07 WrapperNode [2021-03-24 10:03:07,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:03:07,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:03:07,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:03:07,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:03:07,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:07,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:03:08,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:03:08,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:03:08,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:03:08,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... [2021-03-24 10:03:08,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:03:08,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:03:08,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:03:08,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:03:08,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:03:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-24 10:03:08,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-24 10:03:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:03:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:03:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:03:08,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:03:08,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:03:08,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:03:08,124 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 10:03:08,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:03:08,796 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-03-24 10:03:08,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:03:08 BoogieIcfgContainer [2021-03-24 10:03:08,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:03:08,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:03:08,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:03:08,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:03:08,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:03:07" (1/3) ... [2021-03-24 10:03:08,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46c0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:03:08, skipping insertion in model container [2021-03-24 10:03:08,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:03:07" (2/3) ... [2021-03-24 10:03:08,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46c0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:03:08, skipping insertion in model container [2021-03-24 10:03:08,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:03:08" (3/3) ... [2021-03-24 10:03:08,807 INFO L111 eAbstractionObserver]: Analyzing ICFG 23_lu-fig2.fixed.i [2021-03-24 10:03:08,814 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:03:08,818 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 10:03:08,819 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:03:08,847 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,848 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,849 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,850 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,851 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,852 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,852 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,853 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,853 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,854 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,856 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,856 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,857 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,858 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,858 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_#in~PR_CreateThread__RES| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~PR_CreateThread__RES~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,859 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,859 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_atomic_thr1_~PR_CreateThread__RES not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:03:08,861 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:03:08,877 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 10:03:08,896 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:03:08,896 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:03:08,896 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:03:08,896 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:03:08,896 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:03:08,896 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:03:08,896 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:03:08,896 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:03:08,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 49 places, 47 transitions, 99 flow [2021-03-24 10:03:08,925 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-24 10:03:08,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:03:08,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-24 10:03:08,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 47 transitions, 99 flow [2021-03-24 10:03:08,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 95 flow [2021-03-24 10:03:08,933 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:03:08,940 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-24 10:03:08,943 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 95 flow [2021-03-24 10:03:08,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 95 flow [2021-03-24 10:03:08,952 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-24 10:03:08,952 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:03:08,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 2/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2021-03-24 10:03:08,954 INFO L142 LiptonReduction]: Number of co-enabled transitions 378 [2021-03-24 10:03:09,811 INFO L154 LiptonReduction]: Checked pairs total: 756 [2021-03-24 10:03:09,811 INFO L156 LiptonReduction]: Total number of compositions: 24 [2021-03-24 10:03:09,813 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 881 [2021-03-24 10:03:09,820 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-24 10:03:09,820 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:03:09,820 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:03:09,821 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:03:09,821 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:03:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:03:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2075817331, now seen corresponding path program 1 times [2021-03-24 10:03:09,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:03:09,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958420499] [2021-03-24 10:03:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:03:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:03:09,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:09,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:09,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:09,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:03:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:03:09,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958420499] [2021-03-24 10:03:09,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:03:09,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:03:09,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815144567] [2021-03-24 10:03:09,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:03:09,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:03:09,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:03:09,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:03:09,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 71 [2021-03-24 10:03:09,999 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:03:10,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 71 [2021-03-24 10:03:10,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:03:10,025 INFO L129 PetriNetUnfolder]: 2/23 cut-off events. [2021-03-24 10:03:10,026 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:03:10,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 23 events. 2/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-24 10:03:10,029 INFO L132 encePairwiseOnDemand]: 66/71 looper letters, 2 selfloop transitions, 2 changer transitions 3/22 dead transitions. [2021-03-24 10:03:10,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 57 flow [2021-03-24 10:03:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:03:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:03:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2021-03-24 10:03:10,046 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9154929577464789 [2021-03-24 10:03:10,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 195 transitions. [2021-03-24 10:03:10,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 195 transitions. [2021-03-24 10:03:10,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:03:10,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 195 transitions. [2021-03-24 10:03:10,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,063 INFO L185 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 195 transitions. [2021-03-24 10:03:10,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 57 flow [2021-03-24 10:03:10,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:03:10,067 INFO L241 Difference]: Finished difference. Result has 25 places, 18 transitions, 42 flow [2021-03-24 10:03:10,068 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2021-03-24 10:03:10,069 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2021-03-24 10:03:10,069 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 42 flow [2021-03-24 10:03:10,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,069 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:03:10,070 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:03:10,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:03:10,070 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:03:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:03:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1712842773, now seen corresponding path program 1 times [2021-03-24 10:03:10,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:03:10,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864463297] [2021-03-24 10:03:10,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:03:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:03:10,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:10,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:03:10,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:03:10,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864463297] [2021-03-24 10:03:10,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:03:10,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:03:10,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545893006] [2021-03-24 10:03:10,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:03:10,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:03:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:03:10,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:03:10,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 71 [2021-03-24 10:03:10,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:03:10,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 71 [2021-03-24 10:03:10,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:03:10,152 INFO L129 PetriNetUnfolder]: 2/20 cut-off events. [2021-03-24 10:03:10,153 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:03:10,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 20 events. 2/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2021-03-24 10:03:10,153 INFO L132 encePairwiseOnDemand]: 67/71 looper letters, 2 selfloop transitions, 2 changer transitions 1/19 dead transitions. [2021-03-24 10:03:10,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 54 flow [2021-03-24 10:03:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:03:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:03:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2021-03-24 10:03:10,159 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9295774647887324 [2021-03-24 10:03:10,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2021-03-24 10:03:10,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2021-03-24 10:03:10,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:03:10,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2021-03-24 10:03:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,167 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 42 flow. Second operand 3 states and 198 transitions. [2021-03-24 10:03:10,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 54 flow [2021-03-24 10:03:10,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 50 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:03:10,168 INFO L241 Difference]: Finished difference. Result has 24 places, 18 transitions, 50 flow [2021-03-24 10:03:10,168 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2021-03-24 10:03:10,169 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2021-03-24 10:03:10,169 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 50 flow [2021-03-24 10:03:10,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,169 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:03:10,169 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:03:10,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:03:10,170 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:03:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:03:10,171 INFO L82 PathProgramCache]: Analyzing trace with hash 219369038, now seen corresponding path program 1 times [2021-03-24 10:03:10,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:03:10,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360657205] [2021-03-24 10:03:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:03:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:03:10,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:10,254 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-24 10:03:10,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:03:10,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 10:03:10,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:03:10,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:10,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:03:10,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360657205] [2021-03-24 10:03:10,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:03:10,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:03:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118916405] [2021-03-24 10:03:10,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:03:10,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:03:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:03:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:03:10,268 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 71 [2021-03-24 10:03:10,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:03:10,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 71 [2021-03-24 10:03:10,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:03:10,289 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-03-24 10:03:10,289 INFO L130 PetriNetUnfolder]: For 10/13 co-relation queries the response was YES. [2021-03-24 10:03:10,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 29 events. 6/29 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 51. Up to 9 conditions per place. [2021-03-24 10:03:10,290 INFO L132 encePairwiseOnDemand]: 64/71 looper letters, 5 selfloop transitions, 8 changer transitions 0/22 dead transitions. [2021-03-24 10:03:10,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 90 flow [2021-03-24 10:03:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 10:03:10,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 10:03:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2021-03-24 10:03:10,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2021-03-24 10:03:10,291 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 230 transitions. [2021-03-24 10:03:10,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 230 transitions. [2021-03-24 10:03:10,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:03:10,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 230 transitions. [2021-03-24 10:03:10,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,294 INFO L185 Difference]: Start difference. First operand has 24 places, 18 transitions, 50 flow. Second operand 4 states and 230 transitions. [2021-03-24 10:03:10,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 90 flow [2021-03-24 10:03:10,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 10:03:10,295 INFO L241 Difference]: Finished difference. Result has 26 places, 20 transitions, 77 flow [2021-03-24 10:03:10,295 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2021-03-24 10:03:10,295 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-03-24 10:03:10,295 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 77 flow [2021-03-24 10:03:10,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,296 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:03:10,296 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:03:10,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:03:10,296 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:03:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:03:10,297 INFO L82 PathProgramCache]: Analyzing trace with hash 367176468, now seen corresponding path program 1 times [2021-03-24 10:03:10,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:03:10,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941596300] [2021-03-24 10:03:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:03:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:03:10,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:03:10,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:03:10,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:03:10,350 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 10:03:10,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:03:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 10:03:10,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941596300] [2021-03-24 10:03:10,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:03:10,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:03:10,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723822759] [2021-03-24 10:03:10,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:03:10,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:03:10,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:03:10,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:03:10,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 71 [2021-03-24 10:03:10,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:03:10,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 71 [2021-03-24 10:03:10,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:03:10,373 INFO L129 PetriNetUnfolder]: 4/25 cut-off events. [2021-03-24 10:03:10,373 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 10:03:10,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 25 events. 4/25 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 41. Up to 7 conditions per place. [2021-03-24 10:03:10,374 INFO L132 encePairwiseOnDemand]: 68/71 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2021-03-24 10:03:10,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 79 flow [2021-03-24 10:03:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 10:03:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 10:03:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2021-03-24 10:03:10,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8838028169014085 [2021-03-24 10:03:10,375 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 251 transitions. [2021-03-24 10:03:10,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 251 transitions. [2021-03-24 10:03:10,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:03:10,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 251 transitions. [2021-03-24 10:03:10,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,377 INFO L185 Difference]: Start difference. First operand has 26 places, 20 transitions, 77 flow. Second operand 4 states and 251 transitions. [2021-03-24 10:03:10,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 79 flow [2021-03-24 10:03:10,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:03:10,378 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-03-24 10:03:10,379 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-03-24 10:03:10,379 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2021-03-24 10:03:10,379 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2021-03-24 10:03:10,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:03:10,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:03:10,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:03:10 BasicIcfg [2021-03-24 10:03:10,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:03:10,384 INFO L168 Benchmark]: Toolchain (without parser) took 2881.01 ms. Allocated memory is still 331.4 MB. Free memory was 294.6 MB in the beginning and 230.4 MB in the end (delta: 64.2 MB). Peak memory consumption was 67.0 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,385 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 331.4 MB. Free memory was 312.9 MB in the beginning and 312.9 MB in the end (delta: 69.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:03:10,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.32 ms. Allocated memory is still 331.4 MB. Free memory was 294.5 MB in the beginning and 295.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 331.4 MB. Free memory was 295.9 MB in the beginning and 293.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,390 INFO L168 Benchmark]: Boogie Preprocessor took 39.60 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 291.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,391 INFO L168 Benchmark]: RCFGBuilder took 753.11 ms. Allocated memory is still 331.4 MB. Free memory was 291.7 MB in the beginning and 246.6 MB in the end (delta: 45.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,392 INFO L168 Benchmark]: TraceAbstraction took 1582.37 ms. Allocated memory is still 331.4 MB. Free memory was 246.6 MB in the beginning and 230.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.0 GB. [2021-03-24 10:03:10,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 331.4 MB. Free memory was 312.9 MB in the beginning and 312.9 MB in the end (delta: 69.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 434.32 ms. Allocated memory is still 331.4 MB. Free memory was 294.5 MB in the beginning and 295.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 63.08 ms. Allocated memory is still 331.4 MB. Free memory was 295.9 MB in the beginning and 293.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 39.60 ms. Allocated memory is still 331.4 MB. Free memory was 293.7 MB in the beginning and 291.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 753.11 ms. Allocated memory is still 331.4 MB. Free memory was 291.7 MB in the beginning and 246.6 MB in the end (delta: 45.1 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1582.37 ms. Allocated memory is still 331.4 MB. Free memory was 246.6 MB in the beginning and 230.4 MB in the end (delta: 16.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 868.3ms, 48 PlacesBefore, 25 PlacesAfterwards, 46 TransitionsBefore, 23 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 4 FixpointIterations, 9 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 24 TotalNumberOfCompositions, 756 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 427, positive: 367, positive conditional: 0, positive unconditional: 367, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 199, positive: 186, positive conditional: 0, positive unconditional: 186, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 199, positive: 186, positive conditional: 0, positive unconditional: 186, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 427, positive: 181, positive conditional: 0, positive unconditional: 181, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 199, unknown conditional: 0, unknown unconditional: 199] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - PositiveResult [Line: 707]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 721]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1487.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 153.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 920.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 22 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=3, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.7ms SsaConstructionTime, 64.0ms SatisfiabilityAnalysisTime, 209.1ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...